The National Highway Traffic Safety Administration (NHTSA), a U.S. automotive safety regulator has sought additional details from Google pertaining to a recent crash involving its self-driving car. Google’s self-driving car struck a municipal bus in Mountain View, California on February 14, 2016.

Mark Rosekind, NHTSA has said that the safety regulator is collecting information in order to get a more detailed exploration of what exactly happened. Rosekind also revealed that he had spoken to Google officials who have been very forthcoming...